MBSS Site Summary for: LIGU-303-R-2003
Located on LITTLE GUNPOWDER FALLS in the Little Gunpowder Falls watershed,
8-digit code: 02130804.
This stream was visited in the spring on 3/13/2003 and again in the summer on 7/31/2003.
Index of Biotic Integrity (IBI) Results:
An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
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Fish IBI
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Good - 4.0 / 5.0
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Benthic IBI
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Good - 4.3 / 5.0
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Land Use
Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
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Catchment area
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25,680 acres
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Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
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Urban Land Use
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4 %
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Agricultural Land Use
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63 %
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Forested Land Use
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32 %
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Stream Water Quality:
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| Water temperature |
19.3 ° C
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| Dissolved oxygen (DO) |
8.3 mg/L
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| pH (lab) |
7.21 |
| Conductivity |
166 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
353.2 µeq/L |
| Dissolved organic carbon (DOC) |
2.1 mg/L |
Biological Stream Condition:
Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health.
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| Eastern American Toad |
| Long-Tailed Salamander |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Pickerel Frog |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Prosimulium |
Black Fly
|
21 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
18 |
| Strophopteryx |
Early Brown Stonefly
|
10 |
| Oemopteryx |
Stonefly
|
6 |
| Isonychia |
Slate Drake Mayfly
|
5 |
| Orthocladius |
Non-Biting Midges
|
5 |
| Stenonema |
Flatheaded Mayfly
|
4 |
| Antocha |
Crane Fly
|
4 |
| Optioservus |
Riffle Beetle
|
4 |
| Prostoia |
Spring Stonefly
|
4 |
| Taeniopteryx |
Winter Stonefly
|
2 |
| Nanocladius |
Non-Biting Midges
|
2 |
| Hydropsyche |
Net-Spinning Caddisfly
|
2 |
| Simulium |
Black Fly
|
2 |
| Hydrobaenus |
Midge
|
2 |
| Parametriocnemus |
Non-Biting Midges
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2 |
| Sympotthastia |
Non-Biting Midges
|
2 |
| Tanytarsus |
Non-Biting Midges
|
1 |
| Dubiraphia |
Riffle Beetle
|
1 |
| Nemouridae |
Nemourid Stonefly
|
1 |
| Chimarra |
Fingernet Caddisfly
|
1 |
| Hagenius |
Clubtail Dragonfly
|
1 |
| Tipula |
Crane Fly
|
1 |
| Protoplasa |
|
1 |
| Crangonyx |
Amphipod
|
1 |
| Enchytraeidae |
Aquatic Worm
|
1 |
| Tubificidae |
Aquatic Worm
|
1 |
| Clinotanypus |
Non-Biting Midge
|
1 |
| Allocapnia |
Small Winter Stonefly
|
1 |
| Capniidae |
Small Winter Stonefly
|
1 |
| Ephemerella |
Sulphur Mayfly
|
1 |
| Polycentropus |
Tube Maker Caddisfly
|
1 |
Sampling with a kick net.
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Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.
